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Onan
Lawn & Garden Engine

Model # BG-MS2980A Official Onan engine

Here are the diagrams and repair parts for Official Onan BG-MS2980A engine, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 267 parts  |
Element 140-1216
#13

Fuel system group diagram

Element

Part #140-1216

Replaced by #45-083-02-S

?
Manufacturer substitution
This part replaces 140-1216. Substitute parts can look different from the original.
This item is not returnable
$25.09 | 
19% OFF Phone Price : $31.09
In Stock
Pre-clner 140-1259
#20

Fuel system group diagram

Pre-clner

Part #140-1259

Replaced by #45-083-01-S

?
Manufacturer substitution
This part replaces 140-1259. Substitute parts can look different from the original.
This item is not returnable
$7.29 | 
12% OFF Phone Price : $8.29
In Stock
Lawn & Garden Equipment Engine Crankshaft Oil Seal 509-0040
#9

Gear cover, oil base and oil pump group diagram

Lawn & garden equipment engine crankshaft oil seal

Part #509-0040

The manufacturer no longer makes this part, and there's no substitute part

Flat Washer 526-0018
#5

Cylinder block group diagram

Flat washer

Part #526-0018

The manufacturer no longer makes this part, and there's no substitute part

Rod Assembly 114-0247
#14A

Crankshaft, flyweel, camshaft and piston group diagram

Rod assembly

Part #114-0247

The manufacturer no longer makes this part, and there's no substitute part

Thrust Washer 104-0575
#16

Cylinder block group diagram

Thrust washer

Part #104-0575

The manufacturer no longer makes this part, and there's no substitute part

Bypass Spring 120-0140
#16

Gear cover, oil base and oil pump group diagram

Bypass spring

Part #120-0140

The manufacturer no longer makes this part, and there's no substitute part

Cup 150-1116
#2

Crankshaft, flyweel, camshaft and piston group diagram

Cup

Part #150-1116

The manufacturer no longer makes this part, and there's no substitute part

Washer 526-0063
#22

Cylinder block group diagram

Washer

Part #526-0063

The manufacturer no longer makes this part, and there's no substitute part

Bearing 101-0432-30
#33E

Cylinder block group diagram

Bearing

Part #101-0432-30

The manufacturer no longer makes this part, and there's no substitute part

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